CORD-19:3c1f47a07aaf0e393dee9fbd08596a4b9f4f0a03 / 12234-12294 JSONTXT

{"project":"CORD-PICO","denotations":[{"id":"p1_all60","span":{"begin":0,"end":60},"obj":"Outcome"},{"id":"p2_o84","span":{"begin":0,"end":60},"obj":"Other"}],"text":"educational status and duration of working as cleaning staff"}